Heavy Majorana neutrino pair productions at the LHC in minimal U(1) extended Standard Model

Abstract

In our recent paper [1], we explored a prospect of discovering the heavy Majorana right-handed neutrinos (RHNs) at the future LHC in the context of the minimal non-exotic U(1) extended Standard Model (SM), where a pair of RHNs are created via decay of resonantly produced massive U(1) gauge boson ($Z^{\prime }$). We pointed out that this model can yield a significant enhancement of the branching ratio of the $Z^{\prime }$ boson to a pair of RHNs, which is crucial for discovering the RHNs under the very severe LHC Run-2 constraint from the search for the $Z^{\prime }$ boson with dilepton final states. In this paper, we perform a general parameter scan to evaluate the maximum production rate of the same-sign dilepton final states (smoking gun signature of Majorana RHNs production) at the LHC, while reproducing the neutrino oscillation data. We also consider the minimal non-exotic U(1) model with an alternative charge assignment. In this case, we find a further enhancement of the branching ratio of the $Z^{\prime }$ boson to a pair of RHNs compared to the conventional case, which opens up a possibility of discovering the RHNs even before the $Z^{\prime }$ boson at the future LHC experiment.

21 pages, 8 figures, version to be published in EPJC. arXiv admin note: substantial text overlap with arXiv:1710.03377

References in corpus (12)

• Search for new high-mass phenomena in the dilepton final state using 36 fb${}^{-1}$ of proton-proton collision data at $\sqrt{s}$ = 13 TeV with the ATLAS detector
• Measurements of neutrino oscillation in appearance and disappearance channels by the T2K experiment with 6.6E20 protons on target
• Unbroken B-L Symmetry
• Gauging U(1) symmetries and the number of right-handed neutrinos
• $Z^{\prime }$-portal right-handed neutrino dark matter in the minimal U(1)${}_X$ extended Standard Model
• Classically conformal U(1)' extended standard model, electroweak vacuum stability, and LHC Run-2 bounds
• Enhanced pair production of heavy Majorana neutrinos at LHC
• Vacuum Stability in U(1)-Prime Extensions of the Standard Model with TeV Scale Right Handed Neutrinos
• Naturally Stable Right-Handed Neutrino Dark Matter
• SU(5)$\times$U(1)${}_X$ grand unification with minimal seesaw and $Z^{\prime }$-portal dark matter
• Non-minimal quartic inflation in classically conformal U(1)${}_X$ extended Standard Model
• LHC Search for Right-handed Neutrinos in $Z^{\prime }$ Models

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• Pinning down the leptophobic $Z^{\prime }$ in leptonic final states with Deep Learning
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